Chemical Bonds Review HW

When is an atom stable?

• when its electrons are evenly distributed through its energy levels
• when its lowest occupied energy level is filled with electrons
• when its highest unoccupied energy level is filled with electrons
• when its highest occupied energy level is filled with electrons

Which description applies to an element (not helium) that has two valence electrons?

• reactive metal
• nonreactive metal
• reactive nonmetal
• nonreactive nonmetal

How do sodium and chlorine both achieve stable electron configurations when they react?

• an electron is transferred from the sodium atom to the chlorine atom
• an electron is transferred from the chlorine atom to the sodium atom
• both atoms gain one electron
• both atoms lose one electron

An ion is an atom that has a net positive or negative electric charge.

• True
• False

An ion with a negative charge is called a(n) (a)   .

An ionic bond forms when (a)   are transferred from one atom to another.

An ion with a positive charge is called a(n) (a)   .

In general, atoms want to have a full valence of this amount of electrons.

(a)  

How many electrons does magnesium need to get rid of in order to be more stable?

• 1
• 2
• 3
• 4

Does iodine want to gain or lose electrons in order to be more stable?

• Gain
• Lose